试题与答案

现今最大的天文望远镜—贵州平塘球面射电望远镜,其直径是()mA、200 B、300

题型:单项选择题

题目:

现今最大的天文望远镜—贵州平塘球面射电望远镜,其直径是()m

A、200

B、300

C、400

D、500

答案:

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